derive serialize and deserialize for PostfixExpression

Author: GyulyVGC

Cargo.toml

@@ -4,3 +4,4 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
+serde = { version = "1.0.209", features = ["derive"] }

src/enums/operator.rs

@@ -1,4 +1,6 @@
-#[derive(PartialEq, Copy, Clone, Debug)]
+use serde::{Deserialize, Serialize};
+
+#[derive(PartialEq, Copy, Clone, Debug, Serialize, Deserialize)]
 pub enum Operator {
     And,
     Or,

src/enums/postfix_token.rs

@@ -1,6 +1,7 @@
+use serde::{Deserialize, Serialize};
 use crate::enums::operator::Operator;
 
-#[derive(Debug, PartialEq)]
+#[derive(Debug, PartialEq, Serialize, Deserialize)]
 pub enum PostfixToken<Predicate> {
     Operator(Operator),
     Predicate(Predicate),

src/structs/postfix_expression.rs

@@ -3,8 +3,9 @@ use crate::internals::postfix_stack_item::PostfixStackItem;
 use crate::traits::predicate_evaluator::PredicateEvaluator;
 use crate::{InfixExpression, InfixToken, Operator, Parenthesis};
 use std::collections::VecDeque;
+use serde::{Deserialize, Serialize};
 
-#[derive(Debug, PartialEq)]
+#[derive(Debug, PartialEq, Serialize, Deserialize)]
 pub struct PostfixExpression<Predicate> {
     tokens: Vec<PostfixToken<Predicate>>,
 }